Fetch and wind dependence of SAR azimuth cutoff and higher order statistics in a mistral wind case

Author

Kerbaol, Vincent ; Chapron, Bertrand ; El Fouhaily, Tanos ; Garello, Rene

Author_Institution

Dept. d´´Oceanogr. Spatiale, IFREMER Centre de Brest, Plouzane, France

Volume

1

fYear

1996

fDate

27-31 May 1996

Firstpage

621

Abstract

Fetch dependence of SAR azimuth cutoff and image statistics on ERS-1 SAR images is discussed. Azimuth cutoff accounts for motions on sea surface and is a kinematic parameter. Wind estimation through cutoff analysis is presented as well as limitations of this method for fetch limited sea states. In addition, SAR higher order statistics have proved to be well correlated with estimated SAR azimuth cutoffs. Their behaviour are presented together with breaking events density probability. A first attempt is proposed to better localize the short lifetime scatterers that are expected to arise and fade within the integration time by bandpass filtering the Doppler spectrum derived from a SLC image

Keywords

atmospheric techniques; meteorological radar; remote sensing by radar; spaceborne radar; synthetic aperture radar; wind; AD 1992 03 23; ERS-1 SAR image; France; Gulf of Lion; Mediterranean Sea; SAR azimuth cutoff; cutoff analysis; fetch; fetch limited sea state; higher order statistics; marine boundary layer; measurement technique; mistral wind; ocean wave; radar remote sensing; sea surface state; spaceborne radar; synthetic aperture radar; wind speed; Azimuth; Band pass filters; Filtering; Higher order statistics; Kinematics; Parameter estimation; Probability; Scattering; Sea surface; State estimation;

fLanguage

English

Publisher

ieee

Conference_Titel

Geoscience and Remote Sensing Symposium, 1996. IGARSS '96. 'Remote Sensing for a Sustainable Future.', International

Conference_Location

Lincoln, NE

Print_ISBN

0-7803-3068-4

Type

conf

DOI

10.1109/IGARSS.1996.516422

Filename

516422